CS302 Midterm Past Papers Spring 2009-2010 by Saida Ali

Spring 2009

Q1. In the binary number “10011” the weight of the most significant digit is (1 marks)

Q2. 4 (2 raise to power 4)

1. 2

Q3. (2 raise to power 3)

1. 2

Q0. (2 raise to power 0)

1. 2

1 (2 raise to power 1)

Q2. An S-R latch can be implemented by using _________ gates (1 marks)

AND, OR

NAND, NOR

NAND, XOR NOT, XOR

Q3. A latch has _____ stable states (1 marks)

One

Two

Three Four

Q4. Sequential circuits have storage elements (1 marks)

True

False

Q5. The ABEL symbol for “XOR” operation is (1 marks)

Q6. A Demultiplexer is not available commercially. (1 marks)

True

False

Q7. Using multiplexer as parallel to serial converter requires ___________ connected to the multiplexer (1 marks)

A parallel to serial converter circuit

A counter circuit

A BCD to Decimal decoder A 2-to-8 bit decoder

Q8. Question No: 9 ( Marks: 1 ) - Please choose one (1 marks)

The main use of the Multiplexer is to

Select data from multiple sources and to route it to a single

Destination

Select data from Single source and to route it to a multiple Destinations Select data from Single source and to route to single destination Select data from multiple sources and to route to multiple destinations

Q10. A logic circuit with an output (1 marks)

<PRIVATE "TYPE=PICT;ALT= mcq5_01700.gif"> consists of ________.

two AND gates, two OR gates, two inverters three AND gates, two OR gates, one inverter

two AND gates, one OR gate, two inverters

two AND gates, one OR gate

Q11. The binary value of 1010 is converted to the product term (1 marks)

True

False

Q12. Question No: 13 ( Marks: 1 ) - Please choose one (1 marks)

Following is standard POS expression

True

False